code: def get_backend():
      """
      Get image_utils` backend module used now.
  
      Returns:
          str
      """
  
      return backend_manager.get_backend()
  
file_path: nnabla/python/src/nnabla/utils/image_utils/__init__.py
imports: from __future__ import absolute_import
  import numpy
  from .backend_manager import backend_manager
  from .backend_events.common import rescale_pixel_intensity
label_desc: Use image node_id 2 for calling a global function with example usage: get_backend() and returns: backend_manager